Home / 621,212.15-857,263.28-349,280.30

Finding the Fourth Proportional to 621,212.15, 857,263.28 and 349,280.30

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Solution

The fourth proportional to 621,212.15, 857,263.28 and 349,280.30 is: 482,001.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,212.15 : 857,263.28 = 349,280.30 : x
  2. Step 2: Convert to fraction form
    621,212.15/857,263.28 = 349,280.30/x
  3. Step 3: Cross multiply
    621,212.15x = 857,263.28 × 349,280.30
  4. Step 4: Simplify right side
    621,212.15x = 299,425,169,584.67
  5. Step 5: Solve for x
    x = 299,425,169,584.67/621,212.15
  6. Step 6: Final answer
    x = 482,001.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.